| 학회 |
한국화학공학회 |
| 학술대회 |
2010년 가을 (10/21 ~ 10/22, 대전컨벤션센터) |
| 권호 |
16권 2호, p.2138 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Role of H2 on the selective catalytic reduction of NOx over Ag/Al2O3 catalyst by simulated diesel with ethanol |
| 초록 |
The selective catalytic reduction of NOx by hydrocarbons is a promising technology for removing NOx from automotive engine specifically under lean condition.However, the low temperature deNOx performance of HC/SCR technology may not be appropriate to practically apply to diesel engine.One way to improve the low temperature deNOx activity over Ag/Al2O3 catalyst may be the addition of hydrogen into the feed gas stream.In the present study, the deNOx performance and the characteristics of Ag/Al2O3 catalyst by addition of H2 into feed including simulated diesel with ethanol have been systematically examined.As the hydrogen concentration increases, the deNOx performance is significantly enhanced in the low reaction temperature region less than 300 oC.Based upon O2-TPD and in-situ FTIR study, one of the primary roles of hydrogen for the enhancement of the low temperature activity is the transformation of Ag to the Ag-Ox complex including Ag-O2, Ag+(O2)- and Ag-O3 on the surface of Ag/Al2O3 catalyst.They promote the formation of the reaction intermediates including nitrate and enolic species enhancing the NOx removal activity. |
| 저자 |
김평순1, 김문규1, 남인식1, 조병권2, 오세혁2
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| 소속 |
1포항공과대, 2GM R&D |
| 키워드 |
HC/SCR; Ag/Al2O3; Low temperature activity; Hydrogen; Ag-Ox complex
|
| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
